In Talmud Pesachim, Rava teaches, "A person who swallows matzah without chewing fills the mitzvah, the commandment, to eat matzah. However, a person who swallows maror without chewing doesn't fulfill the mitzvah to eat maror."
Matzah is Biblical fast food. Matzah is flat because the Hebrews were in such a hurry to get out of Egypt, they didn't wait for their bread to rise. They rushed out, eating crackers, because they had to eat something. Matzah is optimistic, portable, light and...